Finding the right hair oil can be tough. Apply too little and you'll reap zero benefits, whereas applying too much can lead to greasy, oil-laden locks. The solution: nourishing yet lightweight options designed to sink into your hair shaft without leaving any residue. These'll hydrate your tresses while repairing their shine. For those with frizzy hair, hair oils also help to tame any flyaways and detangle knots. Below, glimpse our prime hair oil picks to keep 'em strands glossy.